They are high-end notebooks of the series of Surfacebooks.
With 100g thicker interleaves and exposed bookbinding, the style and functionality were heightened.
Whenever any page is opened, it is opened 180°. And the surface is backed toughly by paperboard, clear writing is possible.
As textures of the cover, concrete and marble are added. By the bookbindingincluding end paper, the finishing is neat and luxurious.